In the past, antibacterial and antiviral fabric treatments were merely an “add-on” feature — but according to Dagsmejan, a sustainable Swedish-Swiss sleepwear company, these technologies “have become a must-have” due to the coronavirus pandemic. Antibacterial fabrics have been around for many years, as they’ve been particularly useful for performance-oriented sportswear, the company said. “Traditionally, [antibacterial technology] has been a finishing applied to the knitted fabric, with the disadvantage that this treatment washed out after 30 to 40 washes and the effect was gone.” That’s why Dagsmejan — a Swedish word that references the final days of winter, when the warmth of the sunshine melts the snow even when the temperature is still below zero, according to the brand — developed a technology where antibacterial properties are added at the fiber level, creating a more sustainable and permanent solution to preserving these properties over time. Dagsmejan also uses natural antibact...